package cn;

import org.junit.Test;

import java.util.ArrayList;
import java.util.List;

public class sjhds {

    @Test
    public void sodj(){
        List<Integer> ls= new ArrayList<>();

        System.out.println(ls.size());
        System.out.println(ls.equals(null));
        ls.get(0).equals("null");


    }

    @Test
    public void  s(){

    }
}
